This one's driving me crazy -

Anytime I attempt to install a Microsoft game, I get the Crimson Skies setup
instead. I initially discovered this when I tried to install the Dungeon
Siege II demo, but it seems to be a problem with ANY Microsoft game I try to
instal - Halo, Freelancer, etc. Any Microsoft games setup brings up the
Crimson Skies installer, although trying to click 'Install' on this does
nothing.

I've tried uninstalling Crimson Skies, reinstalling Crimson Skies, running
the Windows Install cleanup utility...nothing works.

Anyone have any ideas? This really sucks...

Thanks.
(anonymous to avoid spammers)